ZHAI Gaofeng. Annular Integrated Repair Technology for Large Section Horsehead in Soft and Broken Surrounding Rock[J]. Safety in Coal Mines, 2014, 45(7): 83-85.
    Citation: ZHAI Gaofeng. Annular Integrated Repair Technology for Large Section Horsehead in Soft and Broken Surrounding Rock[J]. Safety in Coal Mines, 2014, 45(7): 83-85.

    Annular Integrated Repair Technology for Large Section Horsehead in Soft and Broken Surrounding Rock

    • In order to study the repair technology of large section horsehead which located in the combination of weak broken coal shale, this article proposed the general governance idea for large section roadway, and described the characteristics of deep-shallow hole grouting rock. The FLAC3D is used to study the principle of the anchor construction annular integrated support technology, and the superiority of the anchor construction annular integrated control system is discussed from 5 aspects of support form, cooperative control, etc. The results show that three-layer annular reinforcing arch of annual integrated control system which formed by grouting reinforcement, anchor cable support and concrete pouring can effective control soft and broken surrounding rocks of large section roadway.
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